Attorwkt



' (No Model.) 2 Sheets-Sheet 1.

J. H. OLAPP.

STAMPING PRESS.

No. 324,812 Patented Aug. 25, 1885.

ljflflflllli HHIHH IN] WIN! WITNESSES:

I INVENTOR ATTORNEY 2 Sheets-Sheet 2.

(No Model.)

J. H. OLAPP.

STAMPING PRESS.

No. 324,812. Patented Aug. 25,1885.

ATTORNEY UNITED STATES. rerun,

JAMES H. CLAPP, OF CHICAGO, ILL, ASSIGNOR TO JAMES LOUIS BOARD.

STAMPING-PRESS.

SPECIFICATION forming part of Letters Patent No. 324,812, dated August 25, 1885.

Application filed March 5, 1884. (No model.)

To aZZ whom it may concern justably secured in the brackets e e, secured,

Be it known that I, JAMES H. CLAPP, of as shown, to guides a a. Chicago, in the county of Cook and State of When the bar E is held stationary by the Illinois, have invented certain new and useful pins (1 (Z, during the return movement of the 5 Improvements in Stamping-Presses; and I stamping-head, it will anticipate and bear on y do hereby declare that the following is a full, the contiguous end of the stem 0 of the die 0, clear, and exact description of the invention, which latter it will force outward to the face which will enable others skilled in the art to of the die-head, where the said die will stop, which it appertains to make and usethe same, first, by reason of the bar bearing against the 10 referencebeinghad to the accompanying drawside limit of the transverse slot D; second, by

ings, and to letters of reference marked thcrereason of the collar 0, adjustably secured on on, which form a part of this specification. said stem, as shown, bearing against the con- Heretofore in sheet-metal-stamping presses tiguous end of the shank or tang b, and,third, considerable difficulty has often been experiby reason of the head A reaching the limit of 1 enced in releasing or discharging from the its return movement.

stamping or male die the formed n1etal-say In order to return the bar E to its original 6 the lid of a pail or box-soon enough to perposition as the stamping-head advances, the mit the next operation of the dies to be made coil expansion -springs g 9 rest in suitable without danger of injury. pockets, 9 g,in such manner that one end will 20 It is the object of my improvements to obpress against the said bar and force it back to viate this difficulty, and this I accomplish by its original position. means of mechanism which is contingent on The operation of the stamping-machine is the motion of the stamping-head, and which the same as usual. Thus the sheet metal is is therefore positive in its action. placed between the male die (l and female die 2 In the drawings, Figure 1 represents a G, and as the stan'iping-head advances the transverse vertical section of my invention, edges of the die-head, which are inversely and Fig. 2the same with an additional feature. beveled, as shown, cut a metal blank, and as Reference being had to the drawings, A it continues to advance it forces the cushioned represents the stamping-head, reciprocating in ring h downward, thus forming the said blank 0 the guides a a and driven through the mediinto the required shape, and when the two uni of an adjustable pitman, A, which is pivdies 0 and G meet gives the face of the formed oted in its upper end, as shown, by the driveblank the desired impression. As the head shaft. In its lower end is inserted the die- A is Withdrawn, the metal design or object head B, having a tang or shank, b, which enformed by the dies will remain in the circular 3 5 ters and is secured in asuitable manner theredepression of the die-head B until the bar E in. In the engaging face of this die-head is a is anticipated and held stationary by the pins 8 5 circular depression concentric to the cylindrid (I, when the stem of the die 0, striking the cal exterior thereof, in which is placed and bar,will be held stationary,while the head A operates the male die 0. This die 0 has a and die-head B continue to reccde to the limit 0 spindle, 0, extending vertically therefrom, of their stroke, thus forcing out the formed which passes longitudinally and centrally and stamped metal. through a suitable herein the shank I) up into Sometimes it is necessary to use larger dies, atransverseslot, D, in thestamping-headA. the diameter of which will almost equal the Placed longitudinally in the transverse slot transverse dimensions of the contiguous end 45 D is the cross-bar E, the ends of which pro of the stamping-head A. In this event I place ject out on either side of said head Abeyond pins m, of suitablelength, in the longitudinal the confines of said slot, so that in the return perforations 7G in the said head, between the movement of said head it will be anticipated transverse slot D and the end contiguous to and held stationary by the stop-pins d cl, ad the dies, which pass through the opposing stock of the (lie-head and bear against the inner surface of the (lie 0, so as to equalize the pressure thereon, and which are operated upon in the same manner by the bar E as the stem. 0 of the (lie 0.

WVhat I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the head of a stamping-press,having a transverse slot there- 10 in, the adjustable stops (1 d, the transverse bar E, and die-head B, of the die 0, having a stem or shank, c.

2. The combination, with the head A, having a transverse slot therein, (lie-head B, se-

I 5 cured in said head, and (lie 0 within die head B, having a shank or stem, 0, of the bar E, stops d, and springs g g.

3. The combination of the head A, having a transverse slot, D, and having perforations 7c therein, as shown, in which operate suitable 2o pins, in, with the diehead 13, die 0, and the bar E and stops d d, as shown.

In testimony that I claim the foregoing as my own I hereunto affiX my signature in presence of two witnesses.

JAMES H. CLAPP.

WVitnesses:

E. W. SoHIRAOI-I, FRANK D. THOMASON. 

